Plaiting apparatus for sewing-machines.



No. 696,l0|. Patented Mar. 25, I902. I

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PLAITING APPARATUS FOR SEWING MACHINES.

(Application filed Fab. 6, 1902.) (No Model.) a Sheets-She etl.

' :1 I l'nveiziar' 1 am E A 45m Patdnted Mar. 25, I902 PLAITING APPARATUS FOR SEWING MACHINES.

(Application filed Feb. 5, 1902.

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No. 696,l0|. Patented Mar. 25, I902. F. L. KOEHLEB. PLAITIYNG APPARATUS FOR sEwms MACHINES.

(Application filed Fab. 6, 1902.)

8 Sheets-Sheet 3.

(No Model.)

I72 viziorx N am n4: mums PETERS co, momu'mo WASNINGTON n c No. 696,!0l. Patented Mar. 25, I902 F.- L. KOEHLER.

PLAITING APPARATUS FORSEWING MACHINES.

(Application filed Feb. 5, 1902.) (No Model.) 8-Sheots-Sheet 4.

1' iOlRIS PETERS co. mo'ruuma. WASHINGTON n c No. 696,!0l. Patented llar. 25, I902.

F. L. KOEHLER.

PLAITING APPARATUS FOR SEWING MACHINES.

(Applicstion filed mu 5, 1902. (No Ilodel.) 8 Shoots-Sheet 5.

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No. 696,10I. Patented Mar. 25, I902.

F. L. KUEHLER.

PLAITING APPARATUS FOR SEWING MACHINES.

(Application flled Feb. 5, 1902.)

(No Model.) I 8 Shoots-Sheet 6.

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No. 696,l0l. Patented Mar. 25, I902.

F. L. KOEHLER.

PLAlTlNG APPARATUS FOR SEWING MACHINES.

(Application med Feb. 5, 1902. (No Model.) 8 SheetsSheet 7.

Zddfnessesr No. 696,l0l. Patented Mar. 25, I902.

F. L. KOEH LER. PLAITING APPARATUS FOR SEWING MACHINES.

(Application filed Feb. 5. 1902.) no Model.) a She ts-Sheat a.

UNITED STATES PATENT OFFICE.

FRED L. KOEHLER, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONE-HALF TO THOMAS J. DUNNE, OF MARION, SOUTH DAKOTA.

PLAITING APPARATUS FOR SEWING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 696,101, dated March 25, 1902.

Application filed February 5, 1902. Serial No. 92,627. (No model.)

To all whmwit may concern:

Be it known that I, FRED L. KOEHLER, a citizen of the United States, residing at Ohicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Plaiting-Machines, of which the following is a specification.

The object of this invention is the production of an improved apparatus for plaiting fabrics.

In the embodiment herein shown of this invention a carriage for forming the fabric in plaits is arranged to be reciprocated above the work-plate and in front of the needle of the sewing-machine. On the forward side of said carriage-to wit, that side nearest to the needleare two blades between which the ribbon of fabric to be plaited passes. These blades are mechanically connected in such manner that the forward edge of either may be caused to project beyond that of the other,

accordingly as the plaits are to be turned under or over with relation to the body of the cloth under the needle, which change in the relative positions of said blades is accomplished automatically by a pattern-cam rotated by the mechanism. The depth of the plait is regulated by an adjustable stop that limits the rearward or receding movement of the carriage, and by an automatic mechanism arranged to be actuated by said patterncam the movement of the carriage may be stopped at certain intervals during the plaiting operation in order to leave a space between adjacent plaits.

Pattern-cams of different forms are necessary for the production of different kinds of plaiting. The formand direction of plaitare regulated by the groove in the face of the pattern-cam. The spacing of the plaits upon the ribbon is controlled by the peripheral cam-surface of the pattern-cam. Where the plaiting is to .be continuous, the peripheral surface of the cam'is regular. The patterncam has an intermittent rotary movement, it

being driven bypawls carried bya recipro- Y oatin g bar, which pawls engage ratchet-teeth on said pattern-cam.

In the accompanying drawings, Figure l is aside elevation of a sewing-machine fitted with myimproved plaiting mechanism. Fig.

2 is a plan view of that portion of the plaiter mechanism which lies above the work-plate of the sewing-machine. Fig. 2 is a plan view of a closure for an opening in the workplate, which opening provides access to the mechanism for the purpose of changing the speed of the plaiter with relation to the speed of the sewing-machine. Fig. 3 is an under side view of that portion of the plaiter mechanism which'lies below the work-plate of the sewing-machine. Fig. is a detached plan View of that portion of the mechanism shown in the next-preceding figure which determines the direction of the plaits, also that part which holds the plaiting mechanism out of operation at certain intervals. The action of these mechanisms is controlled by the pat tern-cam, the' former by the cam-groove in the face of said pattern-cam and the latter by the peripheral cam-surface of said cam.

'Fig. 4 is an end elevation of a sewing-machine embodying the features of my invention. 'Fig. I is aview of a clip used in the construction of the mechanism shown in Fig. 4. Fig. 5 is a vertical section on dotted line '5 6 of Fig. 3 looking in the direction of the arrows, showing the gearing for operating the plaiter mechanism at eitherof two different rates of speed. Fig. 6 is a vertical section on dotted line 5 6 of Fig. 3 looking in the direction opposite to that indicated by the arrows on said section-line. Fig. 6 is a detached view, in side elevation, showing the arrangement of levers adapted to withdraw the plaiting mechanism from action. Fig. 6 is an end view of the parts shown in the next-preceding figure. Fig. 7 is a vertical section on dotted line 7 7 of Fig. 3. Fig. 7 is a transverse section on dotted line a a of Fig. 7. Fig. 8 is a transverse vertical central section through the reciprocating plaiting-carriage and its'actuating mechanism. Fig. 9 is a fragmental top plan View of the work-plate of the sewing-machine, showing the plate for supporting the plaiting-carriage and the guides for said plate. Fig. 9 is anend elevation of the parts shown in the next-preceding figure. Fig. 10 is a transverse section through the plaiting-carriage, taken on dotted line 10 10 of Fig. 2.

view of the blade-carrying bar. Fig. 11 is an Fig. 11 is a plan end view of said blade-carrying bar. Fig. 12 is a plan view of the body portion of one of the plaiting-blades. Fig. 12 is an end view of said body portion. Fig. 13 is a face view ofa pattern-cam, showing the cam-groove therein. Fig. 13 is a central section through said pattern-cam on dotted line a a of Fig. 13. Fig. 13 is a representation of the form of plaiting made by the operation of the mechanism when controlled by the pattern-cam illustrated in Fig. 13. Fig. 14 represents the rear side of either of the pattern-cams shown in Figs. 13, 15, 16, and 17. Fig. 15 is a face View of another pattern-cam, and Fig. 15 a representation of the work produced thereby. Fig. 16 is a face view of still another pattern-cam, and Fig. 16 a representation ofits work. Fig. 17 is a face view of a different pattern-cam, Fig. 17 an edge view thereof, and Fig. 17" a representation of the work done by this cam. Fig. 18 is a face view of another form of pattern-cam, Fig. 18 the reverse side therof, and Fig. 18 a representation of the work done by this cam. Fig. 19 is a face view of another pattern-cam, and Fig. 19 a representation of its work. Fig. 20 represents the face of a different pattern-cam, Fig. 20 the reverse side thereof, and Fig. 20 the work produced by this cam. Fig. 21 is a representation of single box-plaiting, the separation between the adjacent plaits indicating that the cam which produced ithad a peripheral cam-surface, and therefore that the interrupting meachanism took part in the production of this plaiting. Fig. 22 represents plain side plaiting which is made without the intervention of either of the cam-controlled mechanisms.

vLike letters of reference indicate corresponding parts throughout the several views.

As hereinbe fore stated, myiinproved plaiter mechanism isused in conjunction with an ordinary sewing-machine, of which latter A is the standard; A, the arm; A the needle-bar; A the needle; A the presser-bar; A the workplate; A, the looper shaft; A the looper, and A the feeder mechanism.

To the underside of the work-plate A, I secure the plates B and B and the bearingblock B supports for the plaiter mechanism. In suitable bearing-openings in the plate B and the bearing-block 13*, I journal. the shaft B and between the outer end of the plate B and the plate B, also in suitable bearingopenings, the shaft B. i

B is astud,internally perforated and screwthreaded, projecting inward from the plate B, its purpose being to assist in supporting the pattern-cam, to be later described herein.

The looper-shaft AF is provided with two spur-gears B and B fastened rigidly together,the latter of which gears is of twice the diameter of the former. They are capable of being fixed to said looper-shaft by means of the screw 13 and of being shifted longitudinally on said shaft in order to change the speed of the plaiting mechanism, as will hereinafter more fully appear. The shaft ]3 carries two gear-wheels B and 13 fixed to said shaft and adapted to be engaged by either of the gears 13 and B An idler-gear B meshes with said gear 13 and conveys motion from said gear to another spurgear 13, rigidly mounted upon the shaft B". The opposite end of the shaft B carries the bevel-pinion B meshing with a similar pinion B, rigidly fixed to the lower end of the short vertical shaft 13". The upper end of the shaft B carries the eccentric B, the end of said shaft projecting slightly above the upper face of said eccentric. A housing 13" incloses the bevel-gear B and forms a bearing for the lower end of the vertical shaft B I will now describe the carriage for supporting the plaiting-blades. This carriage is mounted upon the plate 0, lying within the guides 0 secured to the upper side of the work-plate A on opposite sides of an elongated opening C extending through said work-plate. The plate Chas secured to its lower face a longitudiually-perforated hub C surrounding a rod C rigidly supported underneath the work-plate. A coil compression-spring C surrounds the red C and, lying between the fixed support for one end of said rod and said hub, exerts a pressure upon the latter that tends to throw the carriage to its rearmost position. A buffer-shoulder 0 upon said hub C is faced with leather or other suitable material and is adapted to engage the adjustable stop 0 and limit the rearward movementof the carriage, thereby also limiting the depth ofthe plait. The adjustable stop C is adapted to be locked in any desired position by means of the machine-bolt 0 which passes through the elongated opening 0 in the stop-bar C and enters a suitable screw-threaded opening in the plate B. The position of the stop-bar C is adjusted by turning the screw 0 which screw lies in a screw-threaded opening in the plate B.

C is a clip for securing the stop-bar C to the plate B. The supporting-plateO of the carriage has a raised rear end C, which latter is provided with an elongated opening C adapted to receive the upper end of the vertical shaft B. The eccentric B fixed onathe shaft 13"", has a bearing against the shoulder (3 0f the supporting-plate, and when said vertical shaft B is rotated the cocentric B impinges upon said shoulder L and throws the carriage forward against the action of the compression restoring-spring C, said spring returning the carriage to its rearmost position as the rotation of the eccentric B permits.

D is the frame of the reciprocating-carriage. At its rear end it is provided with several pairs of guide-fingers D, slidably mounted upon the rods D extending transversely across said carriage, said fingers being adapted to be moved upon said rods by I the screw-threaded feed-rods D having right and left hand threads at their opposite ends,

.of thin material secured to one side of the carriage-frame. The springs D and D are for a purpose to be mentioned later herein.

Near the forward end of the carriage the blade-carrying bar E is pivotally mounted upon the screws E, extending through suitable openings in the sides of the carriageframe, This bladecarrying bar is provided with a throatway' E through which the ribbon or ribbons pass from the guide-fingers D to the plaiting-blades, to be later described herein. At its ends the bar E is provided with the transverse openings E and E and upon each its upper and lower faces with the threaded openings E and E for receiving the screws E and E respectively.

F and F represent two cam-bars having a sliding connection with the bladecarrying bar E by means of the screws E and E the cam-bar F lying above the blade-carrying bar, and the cam-bar F lying beneath said bar. Zach of the cam-bars is provided with two elongated cam-openings F each opening having a portion extending parallel with one edge of the bar for receiving the screws E and E also having a portion extending di agonally from said first-mentioned portion, adapted to receive studs projecting from the body portion of each of the plaiting-blades, to be later described herein.

At one end of the blade-carrying bar the cam-bars F and F are conneoted'by means of the oscillatory cross-head F pivotally mounted intermediate its ends upon the pin F extending through the opening E in one end of said blade-carrying bar.

F is the pinwhich forms the pivotal connection between the upper end of I the oscillatory cross-head and the upper cam-bar F, and F the pin which forms the pivotal connection between the lower end of said c'ross head and the lower cam-bar F. Thesepins F and F? are extended somewhat from the side of the cross-head in order that they may alternately engage the two springs D and D attached to the carriage-frame D. At its opposite end the upper cam-bar F has a pivotal connection with the upwardly-extending arm F which latter is pivotally mounted upon the pin F extending through the-transverse opening E in one end of the blade-- carrying bar E. A link F ofisetfronrthe armF but formed integral therewith, extends downward from the pivotal pin F and The several pairs of is adapted to be oscillated by a rod F supported by a yoke above said link, which rod is adapted to be moved by the mechanism below the work-plate, as willjmore fully hereinafter appear.

The plaiter-blades G and G have the body portions G2 and G respective1y,-which latter lie between the cam-bars F and F and the blade-carrying bar E, one blade-body being above and the other below said blade-carrying'bar. Each blade-body is provided with two openings G and G elongated transversely of said body portion, which elongated 8o openings are adapted to receive the screws E and E for connecting the blade-bodies to the blade-carryin g bar, yet permitting a forward-and-backward movement of each blade with reference to said bar. Each of the blade- 8 5 bodies isalso provided with two studs G and G so situated with reference to the openings G and G that said studs shall lie within the diagonal portion of the cam-openings F in p the cam-bars F and F. It will thus be seen that by the arrangement of the mechanism just described a longitudinal movement of the cam-bars will produce a relatively forward-and-backward movement of the plaiting-blades and that by reason of the conuec- 9 5 tion of the oam-bars through the oscillatory cross-head F oneblade will be moved forward when the other is moved backward.

The plaiter-blades are held elevated from-. or depressed against the work-plate accord- 10o ingly as the projecting pivotalpin F or the pin F engages the sping'D or the spring D respectively. The spring D is secured to the carriage-frame D in such position that when the upper cam-bar F is moved from left to right, Fig. 1, the spring will be engaged by the pin F and the forward edge of the blades will be elevated, and when said cam-bar is moved in the contrary direction the pin F? is caused to engage the upturned end of the leaf-spring D and the forward edge of the blades will be depressed.

H is the presser-foot for the sewing-machine, secured in any suitable manner to the lower end of the presser-bar A The foru 5 ward sideof the foot (that side nearest the operator) is curved upward and over toward the plait er blades, presenting a concave guide-surface H, against which the plaiterblades impinge when elevated.

His a scale marked upon the work-plate A at the rear of the presserfoot, its purpose being to enable the operator to center the ribbon with reference to the needle A I isa pattern-cam having a central hub I, 12 5 provided with the perforation 1 On the rear side of the cam the hub I is. provided with ratchet-teeth 1 A cam-groove I is formed in the face of the pattern-cam, and upon certain of the cams a peripheral cam-surface I 1 0 is formed. The pattern-cam is mounted-upon the screw 1, between the plates B and B, which screw enters and engages with the integralscrew-threaded stud 13?. A spool 1 surrounds the screw I and holds the bifurcated end'of the reciprocating rod, to be later described herein, in contact with the patterncam.

An eccentric J is fixed upon the shaft B It has the usual connecting-rod J pivotally attached to the reciprocating bar J This bar is supported by the shafts B and B, it having the elongated openings J and J for receiving the shafts B and B respectively, and permitting the reciprocation of said bar thereon. The outer end of the bar J is bifurcated, and each of its branches J carries a spring-actuated pawl J which ,pawls face in opposite directions and are adapted to engage the ratchet-teeth upon the rear side of the pattern-cam I.

the pattern-cam in order to rotate said cam at each forward and each backward movement of the bar J J is a filler-bar. This bar is shown fully in Figs. 3 and 7. Its office is merely to hold the reciprocating bar J in its properposition upon the shaft B and with relation to the pattern-cam I. When the cam is to be moved, the filler-bar is withdrawn in order to permit the reciprocating bar to he slid bodily with the shaft B away from the pattern-cam. The filler-bar is bifurcated at its rear end to receive the shaft 13 has a side opening J for receiving the shaft B and its forward end rests upon the spool 1 so that the filler-bar cannot be withdrawn until the screw 1 and the spool I have been removed.

K isa lever pivotally mounted near its middle portion within the bracket K, secured to the under side of the work-plate A One .end of this lever carries a roller K adapted to lie within the cam-groove I in the face of An eye K extending transversely through said lever K, is adapted to receive the end of a stud K projecting sidewise from and rigidly secured to an oscillatory yoke K pivotally mounted between the brackets K and K underneath the workplate A The two arms of the yoke K extend upward through suitable openings in the work-plate A and support between their upper ends the rod F which is the rod hereinbefore mentioned as passing through the link F pivotally mounted upon the pin F of the blade-carrying bar.

When the looper-shaft A is rotated, motion is imparted by the spur-gear B thereon to the spur-gear B on the shaft B or if a higher speed of the plaiting mechanism relative to the movement of the sewing-machine is desired the spur-gear B is moved into mesh with the corresponding gear B on the shaft 3 The rotation of the shaft 13 rotates the eccentric J, fixed thereon, and causes a reciprocation of the connecting-rod J. This movement of the connecting-rod reciprocates the bar J and intermittently rotates the pattern-cam I one tooth at a time as the teeth of said cam are engaged first by the pawl of one of the forks J and then by the pawl of the other fork of the reciprocating bar J The roller K of the lever K, lying in the canigroove I in the face of the pattern-cam I, moves the lever K upon its pivot. The movement of the lever K rocks the oscillating yoke K upon its pivotal supports and, through the link F and the arm F moves the cambars F and F and shifts the plaiting-blades forward and backward with relation to each other. This movement of the cam-bars shifts the pin-F into engagement with its spring D or the pin F into engagement with its spring D, raising the forward edge of the blades against the concave guide portion of the presser-footHor depressing the forward edges of the blades against the work-plate A If the blades are raised, the lower blade projects forward beyond the upper one. If they are lowered, the upper blade projects beyond the under one.

The rotation of the shaft B being imparted through the gears 13 or B to the shaft 13 and from this shaft, by means of the bevel-gears B and B, to the vertical shaft B rotates the eccentric 13 fixed on said vertical shaft, moving the carriage bodily forward and backward before the needle A The length of the rod F is sufiicient to permit the link F to travel with the carriage, said link, however, always being subject to the sidewise movement of said rod.

I will next describe the mechanism which in certain plaits throws the carriage forward at intervals, holding it in this inoperative position for an instant. This modified action of the mechanism produces a plaiting having spaces between adjacent piles of box-plaiting. Only certain ones of the pattern-cams are intended to operate this interrupting device, inasmuch as a large portion of plaiting is continuousthat is to say, is made withoutspaces between adjacent box plaits. The cams which actuate the interrupting device have the peripheral cam-surfaces 1". Those cams which have circular peripheries do not actuate it, and the work produced by the mechanism when under control of the last men= tioned cams is a continuous plaiting.

L is a bell-crank lever pivotally mounted upon the bracket L, secured to the under side of the work-plate A one of the arms of which lever carries the roller L adapted to lie in contact with the peripheral cam-surface I of certain of the pattern-cams. The other arm of this bell-crank lever is connected by means of the pivotal link L with the rock-arm L loosely mounted upon the shaft B1. The opposite end of this rock-arm has a pivotal link L connecting it with a finger L, pivotally secured to the under side of the Work-plate A. The free end of the finger L is adapted to engage the hub C, surrounding the guide-rod C It will thus be seen that when a high portion of the peripheral cam-surface of the pattern-cam engages the roller L it will move the bell-crank lever L upon its pivot, oscillate the rock-arm L and move the finger L against the hub C, thus forcing said hub forsaid roller is permitted to descend to its nor-- mal position,'the finger L? will be withdrawn from its interference with theaction of the carriage, and plaiting will go forward, as gov erned by the groove I in the face of the pattern-cam, until another projection on the pe riphery of the cam throws the carriage out of reach of the eccentric B In the operation of this plaiting mechanism the sewing-machine is threaded in the usual manner, the needle A and the presser-foot H raised, and the ribbon to be plaited passed between the guide-fingers D, through the throatway E of the blade-carrying bar E, between the blades G and G, and under the needle A If several ribbons of different widths are to be plaited together, each one of the ribbons is passed between a pair of guide-fingers D and each pair of guide-fingers adjusted to the width of the ribbon lying between them. The end of the ribbon under the needle is placed centrally of the scaleH on the workplate of the sewing-machine, the presser-foot depressed uponthe end of the ribbon or ribbons, and motion imparted to the sewing-machine.

By means of the gear connection hereinbefore described, the eccentric B and the restoring-spring C the carriage-frame D is re ciprocated in front of the moving needle A If the mechanism were not controlled by the cam I, it would make an unbroken series of the pawls J 6 with the ratchet-teeth I of said pattern cam moves the leverK, whose roller K lies within thecam-groove I in the face of the pattern-cam, which roller through its pivotal connections oscillates the yoke K and moves the rod F transversely with relation to the movement of the reciprocating car riage. The link F slides backward and forward upon said rod K and a sidewise movement of the rod oscillates the link and its integral arm F upon the pin F which forms theirpivotal support. The movement of the arm F produces a longitudinal movement of the cam-bars F and F, they by reason of their pivotal cross-head connection being moved in opposite directions; This movement of the cam-bars moves one of the blades forward and the other backward'with relation to each other, also tilts the blade-carrying bar E, raising both blades upward against the guide portion H of the p'resse'r-foot H or deflects said blades against the work-plateA? This oscillatory movement of the blade-carrying bar E is caused by the engagement of the pin F with the spring D when the blades are raised upward and the engagement of the pin F with the spring D when the blades are depressed. The conformation of the groove I in the face of the pattern-cam determines the frequency with which these changes in the position of the blades occur. When the blades are depressed against the work-plate, the plaits are turned under the body of the fabric underthe needle-bar A and therefore the crest of the plait is toward the blades. When the blades are elevated into contact with the guide portion H of the presser-foot H, the plaits are turned over the body of the fabric under the presser-foot H, and therefore the crest of the plait faces away from the plaiting-blades. In boX-plaiting two, three, four, or more plaits are made to face awayfrom the plaiting-blades. Then thesaine number are made to face toward the plaitingblades. This constitutes a pile of boxplaiting. If the cam in control of the mechanism has a peripheral cam-surface I the carriage will be thrown forward as the last plait of the pile of boX-plaiting is made and will be held in this inoperative position for an instant, the feed of the fabric continuing as before.' The carriage is immediately released to action and another pile of box-plaiting is formed.

In single box-plaiting the cam-groove I causes the oscillation of the rod F after each plait in order properly to incline the plaiting-blades and lay the plaits so that they face in the proper directions.

The depth of each plait is governed by the extent of the reciprocatory movement of the plaiting carriage, and this movement is limited by an adjustment of the stop 0 As hereinbefore stated, this stopis moved by turning the adjusting-screw O To remove the patterncam, its supportingscrew I is withdrawn, the filler-bar J 7 removed, and the reciprocating bar J with the shaft B moved sidewise to permit the withdrawal of the pawls J from the ratchet-teeth I of the pattern-cam.

I claim as my invention- 1. In aplaiting mechanism,in combination, two plaiting-blades adapted to pass the material to be plaited between them; an oscillatory blade-carrying bar having a throatway therein; a cam-bar for each blade, each camb'ar having means by which it is adapted to move the adjacent blade forward and back ward relatively to the other blade; means for oscillating said blade-carrying bar; means for bodily reciprocating said blades; and means for fixing the formed plaits.

2. Inaplaiting mechanism,in combination, two plaiting-blades adapted to pass the material to be plaited between them; an oscillatory blade-carrying bar having a throatway therein; a cam-bar having a cam-slot; astud ward and'backward relatively to the other blade; a spring for oscillating the cam-bar;

means for bodily reciprocating said blades; and means for fixing the formed plaits.

3. In a plaiting mechanism,in combination, two plaiting-blades adapted to pass the materials to be plaited between them; an oscillatory blade-carrying bar having a throatway therein; a cam-bar for each of said blades, each cam-bar having a cam-slot; a stud on each of the blades, adapted to lie within the cam-slot of its adjacent cam-bar; means for moving the cam-bars; means for oscillating said blade-carrying bar to bodily rock the plaiting-blades; means for bodily reciprocating said blades; and means for fixing the formed plaits.

4. In a plaiting mechanism,in combination, two plaiting-blades adapted to pass the material to be plaited between them; a carriage for said blades; means for reciprocating. said carriage; a blade-carrying bar pivotally supported on said carriage; a cam-bar for each of said blades, each of which cam-bars has a cam-groove, and is slidably connected with said blade-carrying bar; a stud on each of the blades, adapted to lie within the camgroove of its adjacent cam-bar; means for moving said cam-bars to move the blades forward and backward relatively to each other; means operated by the movement of the carnbars for oscillating said blade-carrying bar to bodily tilt the blades; and means for fixing the formed plaits.

5. In a plaiting mechanism,in combination, two plaiting-blades adapted to pass the material to be plaited between them; a reciprocatory carriage; an oscillatory blade-carrying bar mounted on said carriage, said blades having a sliding connection with said bladecarrying bar; a cam-bar having means by which it is adapted to shift said blades forward and backward relatively to each other; means for oscillating the blade-carrying bar; an eccentric for moving the carriage; and means for fixing the formed plaits.

6. In a plaiting mechanism,in combination, two plaiting-blades adapted to pass the material to be plaited between them; a reciprocatory carriage; an oscillatory blade-carrying bar mounted on said carriage; said blades having a sliding connection with said bladecarrying bar; a cam bar for each of said blades, each cam-bar having a cam-slot; a stud on each of the blades, adapted to lie within the cam-slot of its adjacent cam-bar; means for moving the cam-bars; means for oscillating said blade-carrying bar to bodily tilt the plaiting-blades; and means for fixing the formed plaits.

7. In a plaiting mechanism,in combination, two plaiting-blades adapted to pass the material to be plaited between them; a reciprocatory. carriage; an oscillatory blade-carrying bar mounted on said carriage, said blades having a sliding connection with said bladecarrying bar; a cam bar for each of said blades, each cam-bar having a cam-slot; a

stud on each of said blades, adapted to lie within the cam-slot of its adjacent cam-bar; means for moving the cam-bars; a spring for tilting the blades upward; a spring for tilting them downward; an eccentric for moving the carriage; and means for fixing the formed plaits. v

8. In a plaiting mechanism,in combination, two plaiting-blades adapted to pass the material to be plaited between them; a carriage for supporting said blades; means for reciprocating said carriage; a guide-rod extending transversely of said carriage; a pair of guide-fingers for the fabric to be plaited, mounted upon said guide-rod; and a right and left screw-threaded rod having a screwthread connection with said guide-fingers for moving them longitudinally of said guide-rod toward or from one another.

9. In a plaiting mechanism,in combination, two plaiting-blades adapted to pass the material to be plaited between them; an oscillatory blade-carrying bar having a throatway therein; acam-bar for said blades, each cambar having means by which it is adapted to shift its said blade forward and backward relatively to the other blade; a slidable carriage for bodily carrying said blades; ways for supporting said carriage; an eccentric for moving said carriage on said ways; means for oscillating said blade-carrying bar to bod ily rock the plaiting-blades; a sewing-machine for fixing the formed plaits, which sewing-machine has a rotatory shaft; and a mechanism for connecting said shaft with said eccentric for rotating the latter.

10. In a plaiting mechanism, in combination, two plaiting-blades adapted to pass the material to be plaited between them; an oscillatory blade-carrying bar having a throatway therein; a cam-bar for each of said blades, for shifting said blades forward and backward relatively to each other; means for actuating said cam-bar; a slidable carriage for bodily carrying said blades; ways for supporting said carriage; an eccentric for moving said carriage in one direction on said ways; a spring for moving said carriage in the contrary direction on said ways; a sewing-machine for fixing the plaits, said sewing-machine having a rotatory shaft and intermeshing gear for imparting the motion of said shaft to said eccentric to rotate the latter to slide said carriage forward and backward; and means for bodily rocking the plaiting-blades.

11. In a plaiting mechanism, in combination, two plaiting-blades adapted to pass the material to be plaited between them; a bladecarrying bar; a cam-bar for shifting one of said blades forward and backward relatively to the other blade; means for bodily reciprocating said blades; apattern-cam; meansfor moving said cam; a mechanism controlled by said cam,for moving said cam-bar and means for fixing the formed plaits.

ICC

12. In a plaiting mechanism, in combination, two plaiting-blades adapted to pass the material to be plaited between them; a bladecarrying bar; a cam-bar for shifting one of said blades forward and backward relatively to the other blade; means for bodily reciprocating said blades; a pattern-cam; means formoving said cam; a mechanism controlled by said cam, for moving said cam-bar; means actuated by the movement of said cam-bar, for tilting the blades bodily; and means for fixing the formed plaits.

13; In a plaiting mechanism, in combination, two plaiting-blades adapted to pass the material to be plaited between them a bladecarrying bar; a cam-bar for shifting one of said blades forward and backward relatively to the other blade; means for bodily reciproeating said blades; a pattern-cam having a cam-groove in' its face; means for rotating said cam; a lever adapted to engage said groove; a mechanism for transmitting movement from said lever to saidcam-bar; and

means for fixing the formed plaits;

14.In a plaiting mechanism, in combination, two plaiting-blades adapted to pass the material to be plaited between them; a bladecarrying bar having a throatway therein; a cam-bar for each blade; a carriage; means for reciprocating said carriage; a patterncam having a cam-groove in its face; means for rotating said cam; a lever adapted to engage said groove; a yoke adapted to be moved by said lever; a pivoted link for communieating motion from said yoke to said cam-bar;

.ing said cam; a mechanism controlled by said cam for shifting one of said plaiting-blades relatively to the other blade; a mechanism controlled by said pattern-cam, for vwithdrawing said carriage from the operation of the eccentric; and means for fixing the formed ,plaits.

rocatory carriage for supporting said blades; an eccentric for movingsaid carriage inone direction; a spring for moving said carriage in a contrary direction; a pattern-cam; means for moving said cam; a mechanism controlled by said cam for shifting one of said-e blades relatively to the other blade; a mechanism controlledby said pattern-cam, which mechcarriage forwardagainst said spring; and

means for fixing the formed plaits.

- FRED L. KOEHLERJ Witnesses: v

% GEO. L. CHINDAHL,

ERNEST WEHLAN.

1 6. In a plaitingmechanism, in combina-' ;tion, two plaiting-blades adapted to pass'the -material to be plaited between them; a recipanism' comprises a finger adapted to hold the 

